Now that he’s no longer based out of the troubled Savannah Down Under nightclub, Chris Cook —who now calls himself “The Underground Mayor of The Hostess City”— is moving his monthly voyeuristic get-together/sideshow to this basement bar a handcuff’s throw from City Market. Besides various types of ribald role-playing, dance music will be spun by resident DJ Analog Kid, who was named Best Local Club DJ in our 2007 Readers’ Poll.Fri., 10 pm, B & B Ale House.